These are memory-friendly, browser add-ons which can save you time and extra mouse clicks by letting you preview any link contents by hovering your mouse over it. Whether you’re skimming through Google search results or casually browsing web some of these tools can add some speed to it.
Browster.com (Firefox, Internet Explorer)
(no longer online) each time you search on Google, Yahoo, MSN or visit some popular website browster places a special icon next to each link, hovering mouse over this icon instantly triggers a pop-up window displaying the contents of the destination page. Window stays active as long as your cursor remains on top of it. Browster automatically places icons on all popular websites; Google, Yahoo, eBay, Amazon…etc. In case you stumble upon a website where they don’t appear by deafult(i.e. makeuseof) you can quickly enable them through ‘right-click menu -> Browster prefetch on/off’.
Cooliris (IE, Firefox, Flock, Safari)
very similar to browster but unlike browster cooliris’ preview will work on any site by default. Cooliris also lets you choose how previews triggered i.e. ‘by placing cursor over the link’ or ‘by placing it over the icon next to the link’ or more. There is also an option to enable/disable preview functionality for individual sites, set it once and when you visit it next time your preferred setting is applied as default.
iReader (discontinued) (Firefox, IE)
iReader offers something totally different, it doesn’t preview actual page but instead gets you a short description of it. It’s an awesome concept but the problem with it, sometimes it succeeds sometimes it doesn’t. In my case it didn’t :-( . I have tested it on several links on makeuseof and results were less then satisfactory. So, you’re on your own here… :-)